2121022112 has 24 divisors (see below), whose sum is σ = 4555377792. Its totient is φ = 964100800.

The previous prime is 2121022109. The next prime is 2121022129. The reversal of 2121022112 is 2112201212.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3012464 + ... + 3013167.

It is an arithmetic number, because the mean of its divisors is an integer number (189807408).

Almost surely, 2^2121022112 is an apocalyptic number.

2121022112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2121022112 is an abundant number, since it is smaller than the sum of its proper divisors (2434355680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121022112 is a wasteful number, since it uses less digits than its factorization.

2121022112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6025652 (or 6025644 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 2121022112 is about 46054.5558224157. Note that the first 3 decimals coincide. The cubic root of 2121022112 is about 1284.8380769691.

Adding to 2121022112 its reverse (2112201212), we get a palindrome (4233223324).

Subtracting from 2121022112 its reverse (2112201212), we obtain a square (8820900 = 2970²).

The spelling of 2121022112 in words is "two billion, one hundred twenty-one million, twenty-two thousand, one hundred twelve".